Communication apparatus for communicating with a plurality of co

Details Communication apparatus for communicating with a plurality of co Communication apparatus for communicating with a plurality of co

1997-10-27

2000-10-17

Sheikh, Ayaz R.

Electrical computers and digital data processing systems: input/

Input/output data processing

709222, 709223, 714 48, 714819, 34082506, 34028609, G06F 300

Patent

active

061346047

ABSTRACT:
A communicating apparatus for performing a serial communication with a plurality of communication control units which are cascade connected, including a communicating unit for performing a serial communication with each of the communication control units, a storing unit for storing position data indicative of the order of the communication control units which are cascade connected, and a diagnosing unit for diagnosing a communication abnormal portion on the basis of the position data stored in the storing unit. The diagnosing unit executes a predetermined communication with the communication control unit existing at a position that is closest to the communicating apparatus on the basis of the position data stored in the storing unit and performs a diagnosis on the basis of a result of the predetermined communication. The communicating unit transmits address data to designate the communication control unit to be communicated. The storing unit stores the position data and the address data in correspondence to each other. The communicating unit executes a communication in accordance with the priorities which are made correspond to the address data.

REFERENCES:
patent: 4096566 (1978-06-01), Borie et al.
patent: 4700292 (1987-10-01), Campanini
patent: 5440729 (1995-08-01), Kimura et al.
patent: 5550826 (1996-08-01), Tanaka et al.
patent: 5689647 (1997-11-01), Miura

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